1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following is a true statement with reference to reaction between 2- Bromo-2-methylpropane and aqueous KOH ?
A
The rate of reaction depends on the concentration of the haloalkane and the nucleophile $\mathrm{OH}^{-}$
B
The reaction occurs at a fast rate since the substrate is a tertiary alkyl halide and follows $\mathrm{S}_{\mathrm{N}} 1$ mechanism.
C
The reaction is not favoured by the presence of polar protic solvent.
D
The reaction occurs at a slow rate since it follows $\mathrm{S}_{\mathrm{N}} 2$ mechanism.
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following haloalkanes will give more than one isomeric product, on being heated with alc. KOH ?
A
1- Chloro-2-methylbutane
B
1-Chloropentane.
C
2-Chloro-3, 3-dimethylpentane
D
2- Chlorobutane.
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Both reactions (i) and (ii) give the same compound X as the major product. Identify X

(i). 3-Methylbut-1-ene $+\mathrm{HCl} \rightarrow \mathrm{X}$

(ii). Neopentyl alcohol $+\mathrm{HCl}\left(\right.$ anh. $\left.\mathrm{ZnCl}_2\right) \rightarrow \mathrm{X}$

A
$\left(\mathrm{CH}_3\right)_2-\mathrm{CH}-\mathrm{CHCl}-\mathrm{CH}_3$
B
$\left(\mathrm{CH}_3\right)_2-\mathrm{CCl}-\mathrm{CH}_2-\mathrm{CH}_3$
C
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}\left(\mathrm{CH}_3\right)-\mathrm{CH}_2 \mathrm{Cl}$
D
$\left(\mathrm{CH}_3\right)_2-\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Cl}$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the compound which gives an optically active haloalkane on reaction with $\mathrm{H}_2$ / Ni on heating.

A B C D
COMEDK 2025 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 7 English 1 COMEDK 2025 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 7 English 2 COMEDK 2025 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 7 English 3 COMEDK 2025 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 7 English 4

A
A
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B
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D
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